:root {
  --bg: #f6f3ee;
  --ink: #1c1917;
  --muted: #78716c;
  --line: #e7e0d5;
  --card: #fffdf9;
  --accent: #0f766e;
  --danger: #b91c1c;
  --warn: #b45309;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #dde9e4 0%, transparent 55%),
    linear-gradient(180deg, #f8f5f0, var(--bg));
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1rem 1.5rem; border-bottom: 1px solid var(--line);
  background: rgba(255,253,249,.85); backdrop-filter: blur(8px);
  position: sticky; top: 0;
}
.brand {
  display: inline-flex; align-items: center; gap: .55rem;
  font-weight: 700; letter-spacing: .04em; color: var(--ink); font-size: 1.15rem;
  text-decoration: none;
}
.brand-mark {
  width: 36px; height: 36px; border-radius: 8px; object-fit: cover;
  display: block; box-shadow: 0 0 0 1px var(--line);
}
.login-logo {
  display: block; width: 120px; height: 120px; margin: 0 auto 1rem;
  border-radius: 22px; object-fit: cover;
  box-shadow: 0 10px 30px rgba(28, 25, 23, .12);
}
nav { display: flex; gap: 1rem; flex: 1; }
nav a.on { font-weight: 600; color: var(--ink); }
main { max-width: 920px; margin: 0 auto; padding: 1.5rem; }
.muted { color: var(--muted); }
.error { color: var(--danger); }
.flash { background: #ecfdf5; border: 1px solid #a7f3d0; padding: .75rem 1rem; border-radius: 8px; }
.stack { display: grid; gap: .75rem; }
.row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; }
label { display: grid; gap: .35rem; font-size: .9rem; }
input, select, textarea, button {
  font: inherit; padding: .55rem .7rem; border: 1px solid var(--line);
  border-radius: 8px; background: #fff;
}
button {
  background: var(--accent); color: #fff; border-color: var(--accent);
  cursor: pointer; font-weight: 600;
}
button.secondary { background: #fff; color: var(--ink); }
button.danger { background: var(--danger); border-color: var(--danger); }
.logout button { background: transparent; color: var(--muted); border: none; }
.upload.cardish, .review-card, .similar, .login {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem;
}
.drop {
  border: 1.5px dashed var(--line); border-radius: 10px; padding: 1.5rem; text-align: center;
  color: var(--muted); cursor: pointer;
}
.drop input { display: block; margin: 0 auto .75rem; }
.source-list, .review-list, .knowledge-list { list-style: none; padding: 0; display: grid; gap: .75rem; }
.source-list li, .knowledge-list li {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 1rem;
}
.status { font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
.status-ready { color: var(--accent); }
.status-failed { color: var(--danger); }
.status-extracting, .status-parsing { color: var(--warn); }
.review-card { display: grid; grid-template-columns: auto 1fr; gap: .75rem; align-items: start; }
.review-card .card-body { color: inherit; }
.review-card h2 { margin: .25rem 0; font-size: 1.1rem; }
.badge {
  display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .04em;
  background: #ecfdf5; color: #065f46; padding: .2rem .5rem; border-radius: 999px;
}
.badge.bad { background: #fef2f2; color: var(--danger); }
.error-card { border-color: #fecaca; }
.type { font-size: .8rem; letter-spacing: .08em; color: var(--muted); }
.statement { font-size: 1.05rem; line-height: 1.5; }
blockquote {
  margin: 0; padding: .75rem 1rem; background: #f5f5f4; border-left: 3px solid var(--accent);
  font-style: italic;
}
.meta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; }
.action-row { display: flex; flex-wrap: wrap; gap: .5rem; }
.md {
  white-space: pre-wrap; background: #1c1917; color: #f5f5f4; padding: 1rem;
  border-radius: 8px; overflow: auto; font-family: var(--mono); font-size: .85rem;
}
.timeline { list-style: none; padding: 0; }
.timeline li { display: grid; grid-template-columns: 7rem 1fr; gap: .75rem; padding: .4rem 0; border-bottom: 1px solid var(--line); }
.login { max-width: 360px; margin: 3rem auto; text-align: center; }
.login .stack { text-align: left; }
.lede { color: var(--muted); margin-top: -.25rem; }
.mode-tabs { display: flex; gap: .5rem; margin-bottom: 1rem; }
.mode-tab {
  background: #fff; color: var(--ink); border: 1px solid var(--line);
  font-weight: 600;
}
.mode-tab.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.mode-panel.hidden { display: none; }
.mode-panel textarea {
  width: 100%; min-height: 220px; resize: vertical; line-height: 1.45;
}
.meta-soft {
  display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin: 1rem 0;
}
.primary-wide { width: 100%; margin-top: .5rem; padding: .8rem 1rem; font-size: 1.05rem; }
.tiny { font-size: .85rem; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}
.button-link {
  display: inline-block; padding: .55rem .9rem; border-radius: 8px;
  background: var(--accent); color: #fff !important; font-weight: 600;
  text-decoration: none !important;
}
.button-link.secondary, .button-link.secondary:visited {
  background: #fff; color: var(--ink) !important; border: 1px solid var(--line);
}
.button-link.primary { background: var(--accent); }
.result-summary .found { font-size: 1.25rem; margin: 1rem 0; }
.bucket-list { list-style: none; padding: 0; display: grid; gap: .5rem; }
.bucket-list li {
  display: flex; gap: .75rem; align-items: baseline;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: .7rem 1rem;
}
.bucket-list .count { font-weight: 700; min-width: 1.5rem; color: var(--accent); }
@media (max-width: 640px) {
  .meta-soft { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .top { flex-wrap: wrap; }
  main { padding: 1rem; }
}